Persian gardens

tradition and style of garden

water feature found in gardens, parks, and at memorial sites, consists of a shallow pool of water, undisturbed by fountain jets, for a reflective surface

In traditional Persian architecture, a howz () is a centrally positioned symmetrical axis pool. If in a traditional house or private courtyard, it is used for bathing, aesthetics or both. If in a sahn of a mosque, it is used for performing ablutions. A howz is usually around deep. It may be used as a "theatre" for people to sit on all sides of the pool while others entertain.

thumb|The charbagh at the Tomb of Jahangir in [[Lahore, Pakistan]]

thumb|right|A downslope view of part of the erosion|eroding rill network from [[County Tyrone, Northern Ireland. See below for a close-up view of a single rill]] In hillslope geomorphology, a rill is a shallow channel (no more than a few inches/centimeters deep) cut into soil by the erosive action of flowing surface water. Similar but smaller incised channels are known as microrills; larger incised channels are known as gullies.

form of garden of Old Iranian origin